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Analysis

  • max time kernel
    164s
  • max time network
    170s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2023, 07:22

General

  • Target

    BG279a23_NTH_Viet_Nguyen.exe

  • Size

    872KB

  • MD5

    2dddaa9f2ed801d55242f73524696ef3

  • SHA1

    dea46e90d5f26425eb6ae7aa0e36d313b02fb132

  • SHA256

    1f667508b2ddf652347fd73ac2e084cb004a8616cb04282e59d3ce63ab1e959d

  • SHA512

    b76a4a3830190e0e422f0b6d409a4d59f0da380132896add2ac0bace3d0a68995b4231b27ac4759179af65450b1176e89b944d5260ccb337df14778db949de48

  • SSDEEP

    24576:3Y/WNHhinydd/ST4ndNlJx2De/EbelEs:JBwydZK4ndNrxme4eB

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

Professional

C2

37.139.129.251:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-JKTFN0

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
    "C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
      C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
      2⤵
        PID:4696
      • C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
        C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
        2⤵
        • Suspicious use of SetWindowsHookEx
        PID:5072
      • C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
        C:\Users\Admin\AppData\Local\Temp\BG279a23_NTH_Viet_Nguyen.exe
        2⤵
          PID:2844

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\remcos\logs.dat

        Filesize

        144B

        MD5

        b87e356aecf890ac2edb926a302453aa

        SHA1

        ef5d56afde5091a90815556b56b85884cf251ffe

        SHA256

        e78b61c4958ec4c619f4fa94219ab77893ec360bde908ff7a1a8414cb082154c

        SHA512

        2d03f111d904674e42f18513a621ead0b4979855d19667f66346faedc638c2c220969f7161aec33cd81b474fb9452cc5ad51fcb2cf4e80695f7e64404a463254

      • memory/4460-12-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB

      • memory/4460-1-0x0000000000B00000-0x0000000000BE0000-memory.dmp

        Filesize

        896KB

      • memory/4460-2-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB

      • memory/4460-3-0x0000000005550000-0x00000000055CE000-memory.dmp

        Filesize

        504KB

      • memory/4460-4-0x0000000005610000-0x0000000005620000-memory.dmp

        Filesize

        64KB

      • memory/4460-5-0x0000000005720000-0x000000000578E000-memory.dmp

        Filesize

        440KB

      • memory/4460-6-0x0000000005790000-0x00000000057DC000-memory.dmp

        Filesize

        304KB

      • memory/4460-7-0x0000000005DD0000-0x0000000006374000-memory.dmp

        Filesize

        5.6MB

      • memory/4460-0-0x0000000074EE0000-0x0000000075690000-memory.dmp

        Filesize

        7.7MB

      • memory/5072-16-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-31-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-14-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-13-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-10-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-17-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-18-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-22-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-25-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-26-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-8-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-11-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-32-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-38-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-39-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-44-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-45-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-50-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-52-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-57-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB

      • memory/5072-58-0x0000000000400000-0x0000000000482000-memory.dmp

        Filesize

        520KB